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plugins/impex/exr/exr_converter.cc
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| 133 | struct EXRConverter::Private { | 133 | struct EXRConverter::Private { | ||
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| 134 | Private() | 134 | Private() | ||
| 135 | : doc(0) | 135 | : doc(0) | ||
| 136 | , alphaWasModified(false) | | |||
| 137 | , showNotifications(false) | 136 | , showNotifications(false) | ||
| 138 | {} | 137 | {} | ||
| 139 | 138 | | |||
| 140 | KisImageSP image; | 139 | KisImageSP image; | ||
| 141 | KisDocument *doc; | 140 | KisDocument *doc; | ||
| 142 | 141 | | |||
| 143 | bool alphaWasModified; | | |||
| 144 | bool showNotifications; | 142 | bool showNotifications; | ||
| 145 | 143 | | |||
| 146 | QString errorMessage; | 144 | QString errorMessage; | ||
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| 295 | template <class WrapperType> | 293 | template <class WrapperType> | ||
| 296 | void EXRConverter::Private::unmultiplyAlpha(typename WrapperType::pixel_type *pixel) | 294 | void EXRConverter::Private::unmultiplyAlpha(typename WrapperType::pixel_type *pixel) | ||
| 297 | { | 295 | { | ||
| 298 | typedef typename WrapperType::pixel_type pixel_type; | | |||
| 299 | typedef typename WrapperType::channel_type channel_type; | 296 | typedef typename WrapperType::channel_type channel_type; | ||
| 300 | 297 | | |||
| 301 | WrapperType srcPixel(*pixel); | 298 | WrapperType srcPixel(*pixel); | ||
| 302 | 299 | | |||
| 303 | if (!srcPixel.checkMultipliedColorsConsistent()) { | 300 | channel_type newAlpha = alphaEpsilon<channel_type>(); | ||
| 304 | 301 | if (srcPixel.alpha() > newAlpha){ | |||
| 305 | channel_type newAlpha = srcPixel.alpha(); | 302 | newAlpha = srcPixel.alpha(); | ||
| 306 | | ||||
| 307 | pixel_type __dstPixelData; | | |||
| 308 | WrapperType dstPixel(__dstPixelData); | | |||
| 309 | | ||||
| 310 | /** | | |||
| 311 | * Division by a tiny alpha may result in an overflow of half | | |||
| 312 | * value. That is why we use safe iterational approach. | | |||
| 313 | */ | | |||
| 314 | while (1) { | | |||
| 315 | dstPixel.setUnmultiplied(srcPixel.pixel, newAlpha); | | |||
| 316 | | ||||
| 317 | if (dstPixel.checkUnmultipliedColorsConsistent(srcPixel.pixel)) { | | |||
| 318 | break; | | |||
| 319 | } | | |||
| 320 | | ||||
| 321 | newAlpha += alphaEpsilon<channel_type>(); | | |||
| 322 | alphaWasModified = true; | | |||
| 323 | } | | |||
| 324 | | ||||
| 325 | *pixel = dstPixel.pixel; | | |||
| 326 | | ||||
| 327 | | ||||
| 328 | } else if (srcPixel.alpha() > 0.0) { | | |||
| 329 | srcPixel.setUnmultiplied(srcPixel.pixel, srcPixel.alpha()); | | |||
| 330 | } | 303 | } | ||
| 304 | srcPixel.setUnmultiplied(srcPixel.pixel, newAlpha); | ||||
| 331 | } | 305 | } | ||
| 332 | 306 | | |||
| 333 | template <typename T, typename Pixel, int size, int alphaPos> | 307 | template <typename T, typename Pixel, int size, int alphaPos> | ||
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| 863 | // Set projectionColor to opaque | 837 | // Set projectionColor to opaque | ||
| 864 | d->image->setDefaultProjectionColor(KoColor(Qt::transparent, colorSpace)); | 838 | d->image->setDefaultProjectionColor(KoColor(Qt::transparent, colorSpace)); | ||
| 865 | 839 | | |||
| 866 | // After reading the image, notify the user about changed alpha. | | |||
| 867 | if (d->alphaWasModified) { | | |||
| 868 | QString msg = | | |||
| 869 | i18nc("@info", | | |||
| 870 | "The image contains pixels with zero alpha channel and non-zero " | | |||
| 871 | "color channels. Krita has modified those pixels to have " | | |||
| 872 | "at least some alpha. The initial values will <i>not</i> " | | |||
| 873 | "be reverted on saving the image back." | | |||
| 874 | "<br/><br/>" | | |||
| 875 | "This will hardly make any visual difference just keep it in mind."); | | |||
| 876 | if (d->showNotifications) { | | |||
| 877 | QMessageBox::information(0, i18nc("@title:window", "EXR image has been modified"), msg); | | |||
| 878 | } else { | | |||
| 879 | warnKrita << "WARNING:" << msg; | | |||
| 880 | } | | |||
| 881 | } | | |||
| 882 | | ||||
| 883 | if (!extraLayersInfo.isNull()) { | 840 | if (!extraLayersInfo.isNull()) { | ||
| 884 | KisExrLayersSorter sorter(extraLayersInfo, d->image); | 841 | KisExrLayersSorter sorter(extraLayersInfo, d->image); | ||
| 885 | } | 842 | } | ||
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